He who exercises wisdom exercises the knowledge which is about God.

Happiness and freedom begin with a clear understanding of one principle: Some things are within our control, and some things are not. It is only after you have faced up to this fundamental rule and learned to distinguish between what you can and can't control that inner tranquility and outer effectiveness become possible.

Know, first, who you are, and then adorn yourself accordingly.

And be silent for the most part, or else make only the most necessary remarks, and express these in few words. But rarely, and when occasion requires you to talk, talk, indeed, but about no ordinary topics. Do not talk about gladiators, or horseraces, or athletes, or things to eat or drink - topics that arise on all occasions; but above all, do not talk about people, either blaming, or praising, or comparing them.

When any person treats you ill or speaks ill of you, remember that he does this or says this because he thinks it is his duty. It is not possible, then, for him to follow that which seems right to you, but that which seems right to himself.

Things themselves don't hurt or hinder us. Things simply are what they are. How we view these things is another matter.People think what they will think; it is of no concern to us.

If you would be good, first believe that you are bad.